Message-ID: <31985D8E.43CF@login.eunet.no>
Date: Tue, 14 May 1996 12:16:46 +0200
From: hanscpr@login.eunet.no
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To: cj@hth.com
Subject: Re[2]: X10 or RF digital communication with a PIC?
References: <22325342103345@hth.com>
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Christer Johansson wrote:
>
> Hi,
>
>
> I tried the NE5050N a couple of years ago and it worked just fine to
> transmitt serial data on the mains (managed to go up to 1200 bps) but
> I also suggest you take a closer look at SGS-Thomson's ST7536 and the
> newer ST7537HS1 Power Line Modems, ST7537HS1 is capable to transmitt
> at 2400 bps.
>
> Regards,
>
> /Christer

I have looke into this chip, and the main problem I had with it was the price.
According to the local SGS-Thompson rep. her i Norway, it costs about Nkr 200 a
 piece, unless you
are buying several hundred of them.
This is about 30-35 US$, and in adition you need other components (a signal
 transformer etc.) so the
total price ended up in the area of 300-350Nkr or about 45-55 US$ (NOT including
 power supply).
I dont know what amount of units you need, but I find it much too expensive.
Echelon has an alternative to the SGS chip, but I don't know anything about it.

Good luck in finding anything usable (you'll need it!) I've given up, and
 resorted to RS-485 on
dedicated cabling.

Hans-Christian Prytz
hanscpr@login.eunet.no